Fix build warning for ReadProxyFileIntoAd() on Fedora. #5064
Fix build warning for ReadProxyFileIntoAd() on Fedora. #5064

htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor